I put the chrome covers on my B-pillars, so I shouldn't have this problem.
I'm surprised that these would be covered under warranty since the discoloration is most likely caused by outside agents (not the fault of DC). If they cracked or had some other material defect, I could see them covered by warranty. If you do get these covered under warranty, let us know...that's pretty interesting.
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\'03 DreamCruiser #1040, too many interior and exterior chrome accents to list, orange/white underbody neons, SPICY PT 3BL and plate